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2011
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Based on the facts that AZ31 magnesium alloy can be blow formed just like superplastic aluminum alloys and that most superplastic alloys fail by cavitation, the present study was undertaken to investigate the cavitation behavior of a fine-grained AZ31 sheet during blow forming at the elevated temperature. Other points of interest included the much lower strain rate and temperature dependencies of the magnesium alloy compared with conventional superplastic alloys. It was also aimed to find if cavitation in the AZ31 alloy can be suppressed by hydrostatic pressure, as is the case in most superplastic alloys. Interestingly, the application of hydrostatic pressure did not increase the blow formability of AZ31 sheet, even though it reduced the degree of cavitation. A possible reason for this behavior is discussed.
목차
Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
참고문헌
참고문헌 (16)
참고문헌 신청
1. [학술지(정기간행물)] - B. L. Mordike / 2001 / Magnesium Properties-applications-potential / Mater. Sci. Eng. A 302 (1) : 37 ~ 45
2. [학술지(정기간행물)] - M. T. Perez-Prado / 2002 / Texture Evolution during Annealing of Magnesium AZ31 Alloy / Scr. Mater 46 (2) : 149 ~ 155
3. [학술지(정기간행물)] - H. Takuda / 2000 / The Formability of a Thin Sheet of Mg 8.5 Li 1Zn Alloy / J. Mater. Process Technol 101 (1) : 281 ~ 286
4. [학술지(정기간행물)] - Y. Z. Lu / 2000 / Fracture Behavior of AZ91 Magnesium Alloy / Mater. Lett 44 (4) : 265 ~ 268
5. [학술지(정기간행물)] - N. Ogawa / 2002 / Forming Limit of Magnesium Alloy at Elevated Temperatures for Precision Forging / Int. J. Mach. Tools Manuf 42 (5) : 607 ~ 614
2. [학술지(정기간행물)] - M. T. Perez-Prado / 2002 / Texture Evolution during Annealing of Magnesium AZ31 Alloy / Scr. Mater 46 (2) : 149 ~ 155
3. [학술지(정기간행물)] - H. Takuda / 2000 / The Formability of a Thin Sheet of Mg 8.5 Li 1Zn Alloy / J. Mater. Process Technol 101 (1) : 281 ~ 286
4. [학술지(정기간행물)] - Y. Z. Lu / 2000 / Fracture Behavior of AZ91 Magnesium Alloy / Mater. Lett 44 (4) : 265 ~ 268
5. [학술지(정기간행물)] - N. Ogawa / 2002 / Forming Limit of Magnesium Alloy at Elevated Temperatures for Precision Forging / Int. J. Mach. Tools Manuf 42 (5) : 607 ~ 614
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UCI(KEPA) : I410-ECN-0101-2014-551-000231251